And harvey h



E. N. PHILLIPSAND H. H. DICK.

BOILER SKIMMER 0R CLEANER.

APPLICATION FIL'ED MAY 9. mn.

5 SHEETS-SHEET I.

E. N. PHILLIPS AND H. H. DICK.

BOILER SKIMMER OR CLEANER. APPLICATION FILED MAY9. I917.

Patented Sept. 9, 1919.

5 SHEETSSHEET 2- PLANOUMHI 170., WASHINGTON, D. c

E. N.*P-HILLIPS AND H. H. DICK.

A BOILER SKIMMER 0R CLEANER. APPLlCATlON FILED MAY 9. 19!]. r 1,315,574. Patented Sept. 9,4919. 1 5 SHEETS-SHEET s;

m BOILER SKIMMER 0R CLEANER.

APPLICATION FILED MAY9. 19:7.

Patenised Sept. 9, 1919.

THE COLUMBIA PLANOGRAPH cm, WASHINGTON. n. C.

' E. N. PHILLIPS AND H. H DICK.

Patented Sept. 9, 1919.

5 SHEETSSHEET 5.

THE COLUMBIA PLANQGRAPH C0,, WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

EUGENE 1\T. PHILLIPS, OF SAN" ANTONIA, TEXAS, AND HARVEY H. DICK, 0F LINCOLN, ILLINOIS, ASSIGNORS TO AMERICAN STEAM BOILER CLEANER COMPANY, A COR- PORATION OF TEXAS.

BOILER SKIMMER 0R CLEANER.

Specification of Letters Patent.

Patented Sept. 9, 1919.

To all whom it may concern:

Be it known that we, EUGENE N. PHILLIPS and HARVEY H. DICK, citizens of the United States, residing at San Antonio and Lincoln, respectively, in the counties of BeXar and Logan, respectively, and States of Texas and Illinois, respectively, have invented certain new and useful Improvements in Boiler Skimmers or Cleaners, of which the followlo ing a specification.

()ur invention relates to new and useful improvements in boiler cleaners or shimmers,

built into or inclosed in steam boilers of various types and arranged to skim any scum, scale or other sediment, rising to the surface of Water in the boiler because of use of impure water and to discharge 1t from the boiler so as to prevent permanent deposits of such matter upon the inner sur: face of the boiler and the outer surface of the fire tubes, and also prevent foaming and priming in the steam boiler.

More particularly, our invention is 1ntended for use in the steam boilers of locomotives and one of the objects of our in vention is the provision of an efficient sup: porting frame for the skimmer proper of such a character that it may be supported in all boilers of conventional type and firmly held in place, one of the preferred methods bein to attach the supporting frame to the dry pipe of the boiler. The main supporting frame is tubular in construction and in fact forms a portion of the outlet system of the skin'uner or cleaner and supports a second tubular structure which forms the inlet of the system and which includes certain skimmcr pipes having slots 01' other openings through which the scum and scale may pass from the boiler.

A. further object of our invention is the provision of novel means for maintaining the inlet frame at proper level to br ng the slots or openings of the skimmer pipes at or approximately at the water level in the boiler.

In accomplishing this last mentioned object, certain tubular elements of the inlet portion of the system have oscillatmg joint connections with certain tubular elements or brackcts of the outlet portion of the system so that the inlet portion of the system is swinging-1y supported in order that it may adapt itself to changes in water level in the boiler during use. One important object of our present invention is, therefore, the provi sion of suitable oscillating joint structures for connecting the two portions of the system which will be of such a character as to Withstand all strain and wear to which they are subjected in use and still afford a continuo'us uninterrupted passage for the mixture of water, steam and impurities passing from the boiler.

Various structures have been designed and tested for removing scum from the water in boilers of locomotives, but, in most instances have been found ineflicient as being too light and frail in construction, or as being so poorly supported within the boiler as to render it impossible for them to withstand the strong current in the high pressure water tubular boilers and the surging and hammering of water in the boilers produced by the sudden starting, stopping and rocking motion of the engine while running.

Another object which we have in view is, therefore, the construction of a skimmer or cleaner mechanism particularly designed for strength to Withstand the strains to which it is normally subjected.

A further object of our invention is the provision of suitable valves and pipes for controlling the blowing oif of scum, steam and Water from the boiler, whereby a continuous but slight blowing off of such matter may be maintained at all times While the locomotive is running and whereby such matter may be rapidly blown off periodically at the will of the operator.

Furthermore, we seek to provide a boiler cleaner or skimmer possessing the above advantages whieh will be simple in construction, will be capable of being readily assembled, and which may be readily repaired as may be necessary, through injury or deterioration through wear.

- With these and other objects in view, our invention will bemore fully described, illustrated in theaccompanying drawings, and then specifically pointed out in the claims which are attached to and form a part of this application.

In the drawings:

Figure 1 is an elevation of a conventional form of locomotive, showing a portion of the boiler in section and our improved boiler skimmer or cleaner in place;

Fig. 2 is a side elevation of the skimmer or cleaner;

Fig. 3 is a top plan view of the same;

Fig. 4 is a vertical sectional view taken on the line fir-4: of Fig. 2, looking in the direction of the arrows;

Fig. 5 is a fragmentary longitudinal section taken on the line 55 of Fig. 2, showing one of the double oscillating joints employed, in detail, and also one of the floats and its attaching bracket;

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 5, looking in the direction 01 the arrows and showing the method of attaching one of the floats to one of the skimmer pipes;

Fig. 7 is a perspective view of one of the float attaching brackets;

Fig. 8 is a horizontal sectional view takenon the line 88 of Fig. 4;

Fig. 9 is a fragmentary sectional view taken through the line 99 of Fig. 5;

Fig. 10 is a perspective view of the standard portion of one of the tubular brackets employed;

Fig. 11 is an end elevation of a modified form of tubular bracket construction;

Fig. 12 is a sectional View taken on the line 1212 of Fig. 11, looking in the direction of the arrows;

Fig. 13 is a fragmentary perspective view of a still further modified form of supporting frame.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

In order to insure a clear and accurate understanding of our invention, its application and operation, we have illustrated it in connection With a conventional water tubular boiler 10 of a locomotive 11. As best shown in Fig. 1, our improved boiler cleaner or skimmer, indicated as a whole by the numeral 12,, is supported within the boiler upon the dry pipe 13 which, if possible, is the preferred construction.

Referring more particularly to Figs. 2, 3 and 4 of the drawings, it will be seen that our improved boiler skimmer primarily includes a tubular supporting frame, indicated as a whole by the numeral 14, and a pair of tubular inlet frames, each indicated as a whole by the numeral 15. The tubular supporting frame includes a pair ofU-shaped brackets of the type best shown in Fig. 4. Each bracket has side or standard portions 16 which are tubular and which, at their lower ends, are closed by threaded lug caps 17 and which, at their upper ends, are mternally threaded to receive elbow couplings 18. Pipe sections 19 and 20 are threaded into thealined ends of a T.-coupling 21 and i the former of these sections is threaded dieffect the end members of the supporting frame, being connected by pipe sections 21-,

25 and 26, the pipe sections 24 and 25, at one end, being threaded into the side branches of the T-couplings 21. One of these pipe sections, as the section 24, is threaded into one of the alined branches of a T-coupling 27 and the other pipe section 25 is connected by a union coupling 28 to the pipe section 26' which is threaded into the other of the alined branches of the T-coupling 27.

Each of the brackets is supported upon the dry steam pipe by a pair of yoke plates 29, the lower edges of which are cut-away 2aotherwise shaped to conform somewhat to the curvature of the upper surface of the dry pipe and the ends of which are provided with vertically disposed sleeve sections 30 to engage against opposite sides of the standard portions 16 of the brackets so that when bolts 31 are passed through the plates with the sleeve portions engaging the standards and are secured by nuts 32, the standard portions 16 of the brackets'will be firmly clamped between the yoke plates and held against movement. The inner faces of the yoke plates, at either side of their centers, are channeled or cut-away, as shown at 33, for the passage of the arms of a U-bolt 31 which encircles the lower portion of the dry pipe and which clamps the yoke formed by the two yoke plates firmly in place when nuts 35 are threaded upon the ends of the bolt and against washers 36 resting upon the upper edge of the yoke. Obviously, by this arrangement, the bracket as a whole may be swung about the dry pipe to bring its standards 16 to vertical position before the nuts 35 are fully turned home and the bracket may be adjusted vertically through the yoke to bring its lower end to any desired level within the boiler. Both brackets are, of course, secured to the dry pipe in this manner and this vertical adjustment of the brackets with respect to the yokes, is, therefore, of great importance as in many boilers the dry pipe extends at an angle to the horizontal and as will be later apparent it is essential that the lower ends of all of the yoke standards lie in a common horizontal plane. lVhen the standards are properly adjusted in the yokes, they may be secured against any movement by set bolts 36 threaded through certain. of the sleeve portions of the yokes and engaging the standards, as shown'in Fig. 8 of the drawings.

When the above described supporting frame is in place, a valve fitting 37 is passed inwardly through the boiler and connected to the T-coupling 27, and a pipe 38 is led from this fitting back into the cabof the locomotive to a valve 39 which is to be left open while the engine is being operated. From this valve a nipple 40 connects with a T 41 and a nipple from the side opening of this Tleads to a valve 42 from which a discharge pipe 43 leads. This valve 42 is left partially open and blows-continuously while there is steam in the boiler; From the other opening of the T 41 a nipple 44 leads to a valve 45 from which a discharge pipe 46 leads. This valve 45, like the valve 39, has a much larger passage than the valve g*42 and is to be opened only periodically by the -engineer for unusual blowing off of scale, sediment, scum and other impurities from the boiler.

As will be soon explained, each of the ,inlet frame sections is supported by the standard portions 16 of the brackets lying at the same side of the dry pipe, as is clearly apparent by reference to Flg. 3 of the drawings. These standard sections, while tubular, are not in the form of pipe sections but are cast or otherwise formed to provide adj acent their lower ends a laterally or. out-i wardly directed cylindrical hub 47 having a central passage 48 communicating with the bore of the standard and surrounded at its outer end by an annular chamber 49 formed in the outer face of the hub. Furthermore,

each of the standards has a brace arm 50 extending radially from its hub and at a slight downward inclination to receive one end of an arcuate brace and guide bar 51 which is secured to it by a bolt 52 having an unthreaded portion of its shank passed loosely through the end of the guide bar and threaded into the end of the arm 50.

The opposite end of the guidebar is fixed to the intermediate portion of thestandard section 16 by means of a bolt 53 passed j through the end of the guide bar and threaded into a boss reinforcement 54 formed upon the section 16.

The two inlet frame sections of our skimmer are swingingly supported upon the hubs 47 and guide bars 51 and are identical in con- 55 struction, each including a skimmer pipe having double oscillating joint connection 56 near its ends with tubular connecting arms or pipes 57 which have single oscillating joint connection 58 with the hubs.

The double oscillating joints 56 are all alike and a description of one will, therefore, suffice for all. Each of these joints includes a pair of coiiperating sleeve members enlarged intermediate its length to provide 59 and 60, each in the form of a half sleeve a cup shaped body 61, the longitudinal edges of the sleeves and the marginal edges of the cup-shaped bodies being provided with latorally directed clamping flanges 62 perforated to receive rivets 63 by means of which the sleeve sections 59 and 60 may be clamped about the upper end of the correlated pipe section 57 so that the pipe section will communicate at its end with the cylindrical chamber formed by the opposed cup portions 61. Caps 64 are seated between the sections of the clamping sleeves more remote from the pipe sections 57 to form in effect closures for the upper ends of such pipe sections. The cup shaped body portions 61 are provided with concentrically formed instruck beads 65 substantiall V-shaped in cross section and the cup-s iaped body section of the clamping sleeve 60 is also formed with a central openin 66. A pair of corresponding clamping s eeves 67 and 68 are clamped about each end of each skimmer pipe 55 and about the ends of relatively short skimmer pipe sections 55, the cup shaped body of the sleeve 68 being formed with an opening 69, corresponding to the opening 66 of the sleeve 60 and alining therewith. A. bush bearing .70 seats in the alined openings 66 and 69 and at one end is formed with an outwardly directed flange 71 engaging against the inner face of the cup shaped body member of the sleeve 60. A second bush bearing 72 projects through the first and has a flange 73 engaging a body member of the clamping sleeve 68 and the free end of this second bush bearing is peened or flared outwardly, as shown at 74, to lock the two bush bearings together and so hold the pair of bearing sleeves 59 and 60 to the bearing sleeves 67 and 68-and still leave them free for turning movement. A ball bearing ring 75 is interposed between the sleeves 60 and 68 and is formed at spaced peripheral intervals with openings to receive balls 76 which seat in the opposed beads of the sleeves 60 and 68 and which thus provide a ball bearing for the joint. Caps 77 fit snugly about the ends of the supplemental skimmer pipe sections 55 and are secured by cap bolts 78. The cap bolts 78 are also preferably employed to secure the'pipe sections 55 and 57 and the caps 64 in the various sleeves. p

All of the single oscillating joints 58 are identical in construction, being greatly similar to the joints above described. Each of these single oscillating joints includes a pair of clamping sleeves 7 9 and 80. which are riveted for clamping engagement about the free ends .of the pipe sections 57 'and about caps 81, corresponding to the caps 64..

Each of these joints further includes a securing cup 82, the flange of which fits about the hub 47 of the correlated standard section 16, being secured thereto by cap screws 83,

and the body of which is formed with an opening to aline with an opening formed in the body of the clamping sleeve 80. Inner and outer bush bearings 84: and S5, corresponding to the bush bearings and 72, secure the clamping sleeves 79 and 80 to the anchoring cup 82 and ball bearings 86 carried'in openings in a bearing ring87 engage in the head of the body of the bearing sleeve 80 and in a corresponding bead '88 formed in the body of the anchoring cup 82. Cap screws are employed to secure the sleeves 79 and 80 to the pipe sections 57 and counterweights 89 are formed integrally with the outer ends of the caps 81 to counterbalance the swinging intake frame sections, as will be later apparent.

Split sleeves 90 are clamped about the pipe sections 57 and eyes 91, swivelly con nected to the sleeves, encircle the guide bars 51 so'that the pipe sections 57 and, consequently, the skimmer pipes 55 are held against lateral movement and the various oscillating joints are relieved of any lateral strain. The guide bars 51, adjacent their lower ends, are formed with outwardly directed stop lugs 92 which serve to positively limit downward swinging movement of the pipe sections or arms 57.

Brackets 93 secure a plurality of floats 9 1 to the skimmer pipes 55 at spaced intervals, as clearly shown in Figs. 2 and 3 of the drawings. Each of these floats includes a pair of cylindrical body members 95 closed at one end and open at the other, said body members adjacent their open ends being outwardly flared to provide an annular shoulder 96 and at their open ends being formed with laterally directed annular flanges 97. A diaphragm 98 is positioned between the flanges of the ends of the body sections 95 and the edge portions of such flanges are bent about themselves to provide a fluid tight locking seam 99 which also serves to hold'the diaphragm in place. The diaphragm is formed centrally with a small opening 100 and the resultant float is, of course, fluid tight.

Each bracket 93 includes a body 101 in the form ofv a split resilient sleeve, the free edges of which are provided with radially extending'clamping ears 102 apertured to receive a clamping bolt 103 which, together with a nut 104, serves to clamp the sleeve about the strainer pipe. The ends of the sleeve, at the side opposite the clamping ears, are formed with diverging arms 105 which increase in width toward their free endsand which have their free end edges cut-away, as shown at 106, for engagement tionally cut-away centrally, as shown at 108, so that they may be sprung to fit against pipes of somewhat different sizes. A pair of clamping bands 109, provided at their ends with clamping ears 110, engage about the float and against the shoulders 96 thereof and the fingers 107 seat beneath these bands, as clearly indicated in Figs. 5 and (l. Bolts 111 and nuts 112 serve to clamp the bands in place. Preferably, also cap screws 113 are passed through the body portion 101 of the brackets and threaded into the skiinmer pipes to absolutely prohibit any turningl of the floats about the pipes.

he skimmer pipes at spaced intervals throughout their length are formed with diametrically opposed inlet slots 114, or other suitable inlet openings, the slots extending longitudinally of the pipes and the slots in each pipe lying in a common horizontal plane, as fully shown in Fig. 2 of the drawings. '4? 5 proportioned with respect to the counterweights 89 and the weight of the swingingly supported inlet frames of the apparatus as to at all times support the skimmer bars so that their slots are at or approximately at the surface of the water in the boiler. As a result, assuming that the valve 39 and one or the other of the valves -12 and 45 are open, the steam pressure in the boiler will force any scum, scale or other impurities coming to the surface of the water through the slots of the skimmer bars, through the skimmer bars to the swinging tubular arms 57 by way of the passages through the double oscillating joints, through the passages of the single oscillating joints in the tubular brackets and from these brackets through the connecting pipe sections to the pipe 38 and so through one or the other of the discharge pipes 43 and 16. Obviously, under normal operating conditions, the smaller valve 42 will be slightly open and the valve 45 closed, the amount to which the valve 42 is opened being governed by the rate of discharge necessary to keep the surface of the water free from impurities with the particular type of Water being employed in the boiler. The engineer may, however, from time to time, open the larger valve 45 to permit a rapid blowing off of steam, water and floating impurities from the boiler.

From the foregoing description, it will be apparent that we have provided a boiler skimmer or cleaner which may be readily applied within locomotive boilers of ordinary type and which may be firmly but adjustably secured to the dry pipe of the boiler. The importance of having the supporting brackets secured to the dry pipe in such a manner that they may be initially turned to bring the hub portions of the brackets in a common horizontal plane and in such a manner that they may be vertically adjusted for this same purpose will be readily appreciated as it is absolutely essential that the skimmer bars occupy a horizontal position at all times. In installing the cleaner, the standard portions of the brackets should be so adjusted vertically within the yoke that at normal water level in the boiler, the skimnlor bar supporting arms 57 will occupy substantially a midway position, as shown in Fig. 2, when the skimmer bars are supported at the surface of the water. Ample range for upwardand downward movement of the skimmer bars and their float-s, due to changes in water level in the boiler and to surging of water in the boiler, due to movement of the locomotive up and down grades or to its sudden stopping and starting, will therefore be provided for.

It will also be noted that ample provision is made for ready assembly of the parts or ready renewal of any necessaryparts in case of injury either through accident or wear. Furthermore, the double and single oscillating joints are of strong construction and operate with remarkable freedom, due to the ball bearings, so that under all circumstances, the skimmer pipes may readily rise andfall with changes in water level.

In some instances, braces, stay bolts and the like are so positioned within the locomotive boiler as to prevent attachment of our improved skimmer or cleaner to the dry pipe. Under these circumstances, special brackets of the type shown in Figs. 11 and 12, or of the type shown in Fig.13, may be employed which are capable of being secured to some of the stay rods or bolts or pipes already in the boiler or of being secured by stay bolts fixed to the shell of the boiler so that the brackets may properly support the skimmer pipes in a common horizontal plane.

Th bracket shown in Figs. 11 and 12 is greatly similar to the bracket previously described including the tubular standards 115 having the single oscillating joint receivinghubs 116 and connected by yoke plates 117., corresponding to the yoke plates previously described but relatively short to hold the standards in closely spaced relation. A single tie bolt 1118 and nut 119 serve to clamp the standards in adjusted position between the yoke plates and to secure the yoke plates together and cap screws 120 may be passed through the yoke plates and" into the standards for additional strength. One of the yoke plates is formed with a laterally directed boss 121 having a vertically formed bore 122 to receive a rodor pipe fixed to the boiler or forming part of the braces therein and. a set screw 123 is threaded through this boss for locking engagement with such rod 1 or pipe. The upper ends of the standards of each bracket are connected by a U-shaped coupling member 124 provided with bores.

125 opening through the ends of its arms and therein.

connnunicating with a longitudinal bore 126 opening through both sides but closed at its ends by plugs 127. 1 These couplings are pro vided with lateral branches 128 in order that the couplings may be connected by pipe sections, corresponding to the pipe sections 24, 25 and 26, shown in Fig. 3. A nipple 129 connects the upper end of one standard with one arm of the coupling 124 and a union coupling 1'30 connects the other standard "with the other arm 01 the coupling 124.

The form of bracket shown in Fig. 13 includes a pair of T-shaped heads 131 of tubular construction provided at the ends of their alined branches with enlarged hubs 132 for receipt of the attaching cups of the single oscillating oints and "having their lateral I branches connected by the longitudinal pipe cally extending discharge pipe 184 which projects through the boiler for connection with the pipe 38. Tie rods 135 have their ends tapped into the hubs at either side of the longitudinal pipe 133 and their adjacent'ends adjustably connected by turn buckles 136. Supporting rods or bolts 137 are threaded into the upper faces of the hubs andare secured at their upper ends to the shell of the boiler or other suitable support Obviously, with either of the above described forms of supporting brackets, the skimmerpipes, together with their floats and counterweighted arms, may be properly supported for easy swinging movement to keep them in a horizontal plane and at the proper level, dependent upon the water level. T h operation, of course, is the same, irrespective of the type of bracket employed. j Although we have illustrated and described our improved boiler skimmer or cleaner in all its details of construction, it will of course be understood that we do not limit ourselves to such details,-but reserve the rial-1i:- to make any changes, within the scope ofthe appended claims, without in theslightest degree departing from the spirit of our invention. i i

Having thus described the invention, what isclaimed as new is 1. l'na boiler skimmer. tubular brackets, tubular connection establishing communication between the brackets, means for supporting the brackets in a boiler, tubular arms having swinging connection aton'e end with the lower ends of thebrackets and disposed in parallel spaced relation, a skiinmer pipe having swinging connection with the opposite'ends of the arms, the arms havingcommunication both with the pipe and with'jthebrackets and the pipe havinginlet openings, closures for the ends of the pipe,

whereby the floats and counterweights cooperate to maintain the pipe with its inlet openings at substantially the level of water in the boiler while the arm connections be- .tween the pipe and brackets permit vertical movement of the pipe but hold it against angular movement with respect to the brack-- ets, arcuate guide straps carried by the brackets over which the arms move, and

sliding connections between the arms and guide straps whereby the arms are braced in their movement. 7

2. In a boiler skimmer, tubular brackets,

tubular connection establishing communicacarried by the'pipe, counterweights carriedby the opposite ends of the arms whereby the floats and counterweights cooperate to maintain the pipe with its inlet openings at substantially thelevel of water in the boiler while the arm connections between the pipe and brackets permit vertical movement of the pipe but hold it against angular movement with respect to the brackets,'arcuate guide straps carried by the brackets over which the arms move, sliding connections between the arms and guide straps whereby the arms'are braced in their movement, and stops carried by the guide straps to limit downward'swingingof the arms and consequent downward-movement of the pipe.

-' 3'. "In, a boiler skimmer, a yoke adapted to *be clamped-to the dry pipe of a boiler, a supporting bracket clamped in-the yoke and vertically adjustable therein, a skimmer element havingswinging' connection with the braeket'and provided with an inlet opening, the skimmer element, connection and bracket being formed with a communicating 'passage, means for discharging material from the'p'assage, and floats for supporting the skimmer element with'its opening at substantially the water level in the boiler.

. 4. In aboiler skimmer, a tubular frame, all parts of which are in communication with each other, a discharge pipe leadingfrom the frame, oscillating joint connections between certain parts of the frame whereby certain frame elements are supported for vertical movement; floats carried by such elements, the 'float carrying ele- .ments being formed with inlet openings and their parts held at substantially the water level of the boiler by the floats, and means for adjustably securing the framewithin a boiler, said means including yokes adapted 36 to be clamped to the dry pipe of the boiler and to adjustably clamp certain elements of the frame.

'5. The combination with a locomotive boiler, and its dry pipe, of a pair of substantially U-shaped tubular brackets straddling the pipe with their sides projecting downwardly, means adjustably clamping the brackets to the pipe, elongated tubular skimmer elements, floats for supporting the elements, and tubular connecting means between the elements and brackets whereby V the elements have vertical movement but Wlll' always lie in one or another of a series of parallel planes.

6. The combination with a locomotive boiler, and its dry pipe, of a pair of substantially U-shaped tubular brackets straddling the pipe with their sides projecting-45 downwardly, means adjustably clamping the brackets to the pipe, elongated tubular skimmer elements, floats for supporting the elements, tubular connecting means between the elements and brackets whereby the elements have vertical movement but will always he in one or another of a series of parallel planes, and means for discharging matter from the brackets.

7 The combination with 'a locomotive boiler, and its dry pipe, of a pair of subparallel planes, and means for discharging matter from the brackets, said means including a" tubular connection between the brackets and a valved dischargepipe leading from such connection.

r 8. The combination with a locomotive boiler and its dry pipe, of yokes clamped to the dry pipe and providing clamping sleeves, brackets clamped in the sleeves, and skimmers swingingly supported by the brackets.

In testimony whereof we aflix our signatures.

EUGENE N. PHILLIPS. 1,. 5. HARVEY H. DICK. [1 5.

' Copies ofthis patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

